Excavating apparatus.



H. H. HARRIS. EXGAVATING APPARATUS. APPLIOATION FILED JULY 13., 1911.

mass 55.- i'zzzrazf 2272'.

H. H. HARRIS.

EXGAVATING APPARATUS,

APPLICATION FILED JULY 13,.1911.

Patnted Dec 31, 1912' 3 BHEETBSHEET Z.

Q XOR 4 4% /6 MM.

H. H. HARRIS.

'EXGAVATING APPARATUS.

APPLICATION FILED JULY 13, 1911.

Patented, Dec. 31, 1912.

3 SHEET S-SHEET 3.

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UNI STAT HOLLIS HARRIS, F LORAIN,

OHIO, ASSIGNOR 'I'O THETHEW AUTOMATIC remains COMPANY, OF LORAIN, OHICLJQ;- CORPORATION OF OHIO.

EXCAYATING APPARATUS.

To all whom it may concern:

Be it known that I, HoLLIs H. HARRIS, citizen of the United States, residing at Lorain, in the county of Lorain and State of Ohio, have invented a certain new and useful Improvement in Excavating Apparatus, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

The object of this invention is to pro 'vide an excavating apparatus adapted for In the drawings, Figure 1 is a side eleva tion of my excavating apparatus; Fig. 2 is a plan ofthe trackway and mechanism car-' ried by it, being a section through the boom; Fig. 3 is a rear end View of a trackway and driving mechanism; Fig. t is a section through the sliding carriage and dipper handle substantially on an ofiset line 44- of Fig. 1; Fig. 5 is a horizontal section through the carriage on the line 55 of Fig. 4; Fig. 6 is an enlargement of a portion of the side elevation of Fig. 1; Figs- 7 and 8 are respectively left hand and right hand end views of the carriage.

In the drawings, 10 indicates the boom which is shown as comprising a pair of outwardly facing spaced channel beams mounted at their lower ends in a suitable platform 11 which is swiveled on the truck 12. The outer end of the boom is shown as held by a tie rod 13 suitably anchored at its other end to the platform. Near the outer end of the boom are shownsuitable sheaves 14 over which travels the cable 15 for drawing on the bucket 16. The other end of the cable passes about a suitable winding drum 17 within the house on the platform 11. This much of r the construction is of any standard form.

Specification of Letters Patent.

Application filed July 13, 1911.

Patented Dee. 31L. 9112. Serial No. ceases.

Carried by the two members of the boom, on the inner sides thereof, is a horizontal trackway, consisting, as shown, of angle members 20 and 21 secured to the inner faces of the members It) and having their flanges projecting inwardly to comprise to gether substantially a channel shape. Near their forward ends'these angle bars are shown asbraced by the members 23 andZ extending upwardly to the boom and a member 25 .extending diagonally downwardly to the boom near its lower en A t the rear ends the angle bars are shown asbraced by the upwardly extending channel bars 27 connected at their lower ends to the boom. This makes a very rigid construction of horizontal trackway all mounted on the boom. I

30 indicates a carriage mounted in the horizontal trackway described and adapted to be shifted in or out thereof. This car riage is shown in side elevation in Fig. 6, in plan in Fig. 2, in section in Figs. 4 and 5, and detached in Figs. 7 and 8. It comprises an intermediate frame 31, which may be of this boxlike winged form shown, carrying on opposite sides rectangular box-like shoes 32 which occupy the trackway and are slidable therein. The frameanay be a malleable casting and the 33. The shoes may be provided with rub plates 34 and the channels of the trackway may also have rub plates 29 cooperating therewith. As these rub plates wear they may be replaced without other change in the structure.

It will be seen that the carriage has three pairs of upwardly projecting ears 36, 37 and 38. Journaled in the intermediatepair 37 is a shaft 41 and on this shaft between the bearings are a pair of pinions 48 Figs. 2 and 4). Loosely mounted on the shaft between these pinions is an arm 49 which is provided with a T-head or overhanging block 50. Between this block and the pinions extend the two parallel portions or sticks 51 of the dipper handle. Each por tion of the handle is shown as made of wo channel members facing each other. thus providing a hollow beam, and on the rear intermediate.

shoes may be malleable castings bolted to the intermediate frame. by ,bolts designated edge of these two beams are scour id racks 53 which mesh with the pinions 48.

From the above description it will be seen bearing.

that. the pinion shaft 4-1, lay being held stationary, may hold the dipper handle as a strut between the. dipper and shaft, sWing-' The marriage 30 has, in addition to the bearir 3? abc explained, two other il and 2 in which are mounted Sl'll'ltf; in and 42. lfhese two shafts, as WCll as the shaft 41 overhang their bearings and carry. on their two ends outside of the bean lilQS SPiOClKOl) Wheels; designated. d5, 4-6 and ll, respectively.

35 designates a pair of endless sprocket chains which pass in. engagement with the under side of the Wheels 4-6, with the top oi? the Wheels 4:, with the under side of the. wheels {ti and then around a pair of idlers 57 near t ie front. of the tracltway, and then rearnardly and aroinid driving sprockets )8 near the rear of the trachway.

designates an endless sprocket chain which loops around an idler 61 near the tl'oruard end of the tracltWay and driving sprockets near the rear and intermediis connected with a rod 64 mounted in the carriage. The sprocket Wheels 62 and a are of the same diameter. The sprocket chains a re maintained taut by adjusting the id lers 57' and 61 by the nuts 80 and 81 on their r spective carrying brackets.

'lhe fling sprockets 58 tire mounted on a shaf and the. sprockets 62 on the shaft t Rigid. on the shaft is a grea r 7 l which meshes with the gear 70 of equal diameter loose on the shaft (35. The driving engine or other prime Inotor T3 is shown as mounted on a plate 72 carried by the braces :27 and carries a pinion 74-, (Fig. 3) meshing with the gear 70, loose on the shalt 65. Rigid on this shaft, a brake Wheel 75 controlled by a hand brake 76. 0n the shaft 35 is a'slidingjaw clutch 78 which, when opera ted by the lever 79, may loclt the loose gear to the shaft or tree it theij'effrom.

"lho operation of the niei'zhanism described is as follows: To use the horizontal crowd device, the hand brake is reliased from th.. wheel. and the aw clutch "S is thrown by its lever Tl) to engage the loose gear 70.

".lhereupon the eng ii'ie drives the two pairs of sprocket chains in unison and the sprocket. chain (30 mores the carriage in or out, according to the direction of 0ptll'lltlOll of the engine. and the sprocket. chain 5.3 moving correspondingly arts as it it were anchored to the carria and holds the pin ion shall. -51! against rotation. 'i-recordingly, the dipper hand e is racked in or out, by this operation as it it were connected with the carriage on a fixed pivot. Y

To employ the radial crowding device the brake is set on the wheel 75 by means of the lever '76 and the clutch 78 is released from the wheel 70. The brake now holds the trolley stationary by reason of locking the chains 60 While the gear 70 is driven by the engine, in one direction or the other, and

acts as an idler transmitting motion to the gear 71 and shaft 59 and sprocket; c 'ns "lhese sprocket; chains traveling acrossthe apro'. Whees 16 which now haven titted. axis rotate these Wheels, raising or lowering the dipper handle, according to the diroo lion of movement. v

it will he from the ahove description that, simply by the operation of the brake and the clutch levers 76 an d '79 the excavator may be changed at will from the operation of horizontally crowding the dipper arni to the operation of raising and lowering; such dipper arm. This enables the excavation to be instantly varied, according to the re (piireinents, the bucketbeing; caustic to travel along horizontally on a level or swing ahi'int a center orhe raised or lowered, as desired.

Harin thus described my invention, what I claim i:

1. In 'an excavating mechanism, the cone bination ot' a scoop and. handle, an inclined boom, a horizontal'trachway carried there by, a carriage slidahle along the same, a pinion earned by said carriage, a rack on the handle moshing with the pinion, means for holding the carriage stationary and rotating the pinion, means tor holding the pinion stationary and moving the carriage, and independent means for raising the scoop.

Ill ill]. (lILCtU/il hination, with a tatnhle device cooperating with the handle, a sprocket wheel for driving such device, a sprocket chain cooperating with the sprocket. Wheel, mechanism tor i'noving the sprocket. chain to rotate the Wheel, mechanism. for shifting the sprocket; Wheel bodily and coi'icurrently' and similarly moving the chain, whereby the 'Wl'lOQl is held against rotation during such shitting.

3. in an excavating mechanism, the combination of a. scoop, a handle having a rack, a trackway, a carriage slidahle along the trackway, a pinion mounted in the carriage and n'ieshing With the rack, a sprocket; Wheel connected With the pinion, an endless sprocket chain passing-hi engagement with said pinion, a second endless sprocket chain connected With the carriage, means for driv-- ing both sprocket chains in unison to shift, the carriage without. rotating the pinion, and means for driving the first mentioned sprocket chain alone to'rotate the pinion without shitting thecarriage. "y

4. In an excavating mechanism, the combination, with a scoop and handle, ozt" a rack on the handle, a traclcway, a carriage mot :oop and handle, of rol on able along the same, a pinion carried by the other, one of the sprocket chains being'connected to the carriage and the other passing in engagement with the teeth of the rotatable sprocket wheel connected with the pinion, means for driving the sprocket chains in unison to shift the carriage without rotating the pinion, and means for driving the first mentioned sprocket chain alone to rotate the pinion without shifting'the car-A riage.

5; In an excavating mechanism, the combination of a scoop, a handle connected therewith, a rack on the handle,'a trackway, a carriage slidable along'the trackway, a pinion mounted inthe carriage and meshing with the rack, a sprocket wheel connected with the pihion, two endless sprocket chains, one anchored to the carriage and the other passing in engagement with the teeth of said sprocket wheel, two sprocket wheels over which such chains respectively pass, means for rotating both the last mentioned wheels in unison to shift the carriage with out-rotating the pinion, and means for hold-v ing one of said wheels against rotation and rotating the other wheel.

6. Irtan excavating mechanism,thejcombinati'o'n, with a scoop and handle, of a trackway, a carriage therein, a rotatable device mounted in the carriage connected with the handle, a sprocket chain connected with the carriage, a sprocket chain connected with said rotatable device, a pair of rotatable shafts for driving the sprocket chains respectively, a. pair of connecting gears on said shaft, means for driving them, means for connecting one of said gears with itsshaft includin a clutch, and a brake for one of the sha ts.

7 In an excavating mechanism, the combination of a boom, a horizontal trackway carried thereby, a. carriage movable in and out on the trackway, two pairs of sprocket wheels adjacent to the forward and rearward ends of the t-rackway, two sprocket chains passing over said wheels, one of said chains bein anchoied to the carriage, a rotatable device mounted in the carriage with which the other chain drivingly connects,

driving mechanism, gearing between the same and the two sprocket wheels near the rear of the trackway, a clutch for discon-- necting the sprocket wheel which shifts the carriage from the driving mechanism, and a brake for controlling the rotation of such. sprocket wheel and thereby locking the car- 'rlage, a scoop, and a handle connected therewith and cooperating with the rotatable device.

8. Inv an excavating apparatus, the combination of a trackway, a-carria e slidable along the same, a scoop and ban le, a rotatable device mounted in the carriage and engaging the handle, a flexible member mounted independently of the carriage for rotating said rotatable device, a member ponnected with the carriage for moving it and means for moving said last mentione member and said flexible member in the same direction and at the same speed, and means for moving the said flexible member independently of thestationary member.

9. In a device of the character described,

the combination of a trackway, a carriage 80- slidable along the trackway, a pinion mounted in the carriage, a scoop and handle, a rack on the handle meshing with the pinion, mechanism for shifting the carriage in anc out'ofthe trackway, a flexibly'member for driving the pinion, means for moving said flexible member concurrently wlth the in,

andout shifting to shift the carriage without raising the scoop, and means for moving the flexible member without shifting thesgeo carriage to raise or lower the scoop.

10. In a device of the character described, the combination of an inclined boom, a horizontal trackway carried thereby, a carriage slidable on the trackway, a pinion rotatably mounted in the carriage, a scoop, a handle therefor having a rack meshing with the pinion, an elevating cable connected with the scoop independently of the carriage, in

dependent bodily movable members for 10% a moving the carriage and for rotating the pinion, and means for moving said members in unison in either dlrectlon to shift the can riage Without ralsing'the scoop, and means for independently moving the -member 10-5 which rotates the pinion to raise the scoop without shifting the carriage. P

In testimony whereof, I hereunto affix my signature in the presence of two witnesses.

HOLLIS H. HARRIS. 

